Short answer, no, this feature is not ready.
Longer answer is a few months ago I made a significant improvement that will serve as a foundation for this feature.
@bryce-lynch
Are both your profiles in the directory ~/.mozilla/firefox/?
@az0 yes.
There was a fix for this, so would you please try the latest version from Git? It's rather easy to run from Git or source without installation
Just cloned the latest version, it successfully detected and cleaned both profiles and seems to work fine. Thank you! (You can close the issue if you don't have any questions.)
FYI
The fix was published in BleachBit 2.1 beta.
Soon the fix will be published also in BleachBit 2.2 final.
Most helpful comment
Short answer, no, this feature is not ready.
Longer answer is a few months ago I made a significant improvement that will serve as a foundation for this feature.